Journal of Cluster Science

, Volume 14, Issue 3, pp 313–324 | Cite as

The Missing Link in Low Nuclearity Pure Polyoxovanadate Clusters: Preliminary Synthesis and Structural Analysis of a New {V16} Cluster and Related Products

  • De-Liang Long
  • Darren Orr
  • Georg Seeber
  • Paul Kögerler
  • Louis J. Farrugia
  • Leroy Cronin
Article

Abstract

Two new metastable polyoxovanadate-based cluster compounds have been isolated and crystallographically characterized with nuclearities of {V16} (1) and {V18} (2). The {V16} cluster represents a new framework type and incorporates two protons into the cluster framework whereas the {V18} framework has been previously characterised, and the oxidation states of the {V18} cluster can be assigned as {VIV15VV3}. Compound K10[H2V16O38]⋅13H2O (1) crystallizes in the monoclinic space group P21/c, a=12.12820(10), b=38.2302(3), c=12.35400(10) Å, β=115.0470(10)°, V=5189.43(7) Å3, Dc=2.624 g⋅cm−3. 10086 unique reflection and 702 refined parameters were used in structure refinement. R1=0.039, R2=0.109 (all data). From the same preparation the new compound K11[V18O42(SO4)]⋅20H2O (2) was also isolated and crystallographically characterized. Compound 2 crystallizes in the monoclinic space group P21/n, a=12.7854(3), b=20.2812(5), c=13.2386(4) Å, β=115.3400(10)°, V=3102.53(14) Å3, Dc=2.650 g⋅cm−3. 7115 unique reflections and 462 refined parameters were used in structure refinement. R1=0.046, R2=0.121 (all data).

vanadium vanadate polyoxovanadate polyoxometalate x-ray crystal structure mixed valence cluster structure 

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Copyright information

© Plenum Publishing Corporation 2003

Authors and Affiliations

  • De-Liang Long
    • 1
  • Darren Orr
    • 1
  • Georg Seeber
    • 1
  • Paul Kögerler
    • 2
  • Louis J. Farrugia
    • 1
  • Leroy Cronin
    • 1
  1. 1.Department of Chemistry, Joseph Black BuildingThe University of GlasgowGlasgowUnited Kingdom
  2. 2.Ames Laboratory and Department of Physics & AstronomyIowa State UniversityAmes

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